Rotary fan.



W. SPARKS.

ROTARY FAN. APPLICATION FILED DEO.18, 1911v Patented Mar. 18, 1913 /v l tmeo A 1,056,226. Specifics? ented Mar. 18,1913.

Application filed December aerial 3x 11. 6%,374.

Y '0 all 10720722 26' may concern:

Be it. known thatv 1. Nina in SPA:

, Jackson. in the county of Jacsson.

cover and inclose the entire outer blades and its opposite edges are State of Michigan, have inventec new and. provided with inturned reinforcingflanges 5 useful Improvements in liotar v Fans, at --lthe purpose of stiffening the entire which the following: taken in connection f-m and also forming shields or guards to with the accompanying drawings. a full pr vent contact of the blades With adjacent clear. and exact description. iects. ass for example, portions of the en- This invention relates to certain time, radiator or other parts of an automol0 ments in rotary "fans of the (la: bile n which the fan is adapted to be in in my pending application :"MS i. .aled stalled October 17. 1911. in which the grim-era ob- 'ihe outer ends of theblades While disject is to inclose the blades within a rim of posed diagonally or at an angle to the plane I sutlicientwidth to cover and protect the enof rotation are located Wholly Within the 15 tire outer ends of the blades. the: shield guard flanges 4.- and are provided near in: such blades against contact with adth '1' corners with pp s t ly p l g lugs jacent portions of the engine. 1' or dan "es --5 which are secured by suit- .70

other parts of an automobile in able fastening means as rivets t0 the rim fans are adapted to be ins f -l. These lugs or flanges constitute bear- 20 Aside. from this broad cbjs I l e inner face of the rim pref- I ject is to enable the blazgles to be made 0 in close proximity to the annular aratel v from the rim and to provide mean. flanges -iso as to not only st-ifien the whereby they mav be easily and quic i'v atblades but also to stiffen the rim and to setached to such rim entirely within 'th curt-l3 hold said rim in fixed concentric rela' 25 of the opposite edges thereof. tion to the hub or web -3. In this par words I have sought to produce a *lar instance I have shown the web or may be made from comparati ."nade separately from thebo pieces of sheet metal so to in provided with radial arms has heretofore been wast steel; in i all side of said blades 30 duction of a cheaper or stening means as rivets 7, cientlv strong to withstz v fornn; :1 dd connection between which it may be suit-lien 1e blades and enabling me Other objects and usi to use itiativ small pieces of sheet metal in the following dost L which might otherwise be Wasted.

35 In the drawings--Figu hat I claim partly in section. of a rot fan comprising a rim having the various features of in it In. edges provided With inturned Q is a transverse sectional view guard ngcs. separate blades having the 2-2. Fig. l. corners of their outer ends secured to the 40 This fan comprises a rim 1 and a. rim in close proximity to the flanges, and series of radial fan blades 2 arranged web uniting the inner ends of the spokes.

uniform distances apart cirmuntcrentially :2. it rotary fan comprising a rim having about a common and having their inner its opposite edges provided with int-urned 7 ends united by a web or central plate -3- guard flanges and fan blades having the cor- 5 the latter being provided with a. shaft openners of their outer ends disposed in close ing for receiving the shaft of an engii e or proximit to and between the flanges. other motive power by which the "tan is r witness whereof I have hereuntoset t-ated.

'The blades 2 are arranged at 50 angle to the plane oi ro ation tapered and have their wider er most or adjacent the therewith. 

